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fix chunihook

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This commit is contained in:
CrazyRedMachine 2023-12-26 06:25:26 -05:00
parent f4a3a5f78d
commit 926493290b
1 changed files with 26 additions and 5 deletions
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31
chunihook/chuni-dll.c
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@ -39,6 +39,19 @@ const struct dll_bind_sym chuni_dll_syms[] = {
}
};
/* Helper function to determine upon dll_bind failure whether the required functions were found
NOTE: relies on symbols order declared above */
static HRESULT has_enough_symbols(uint16_t version, uint8_t count)
{
if ( version <= 0x0101 && count == 7 )
return S_OK;
if ( version >= 0x0102 && count == 9 )
return S_OK;
return E_FAIL;
}
struct chuni_dll chuni_dll;
// Copypasta DLL binding and diagnostic message boilerplate.
@ -98,16 +111,24 @@ HRESULT chuni_dll_init(const struct chuni_dll_config *cfg, HINSTANCE self)
}
sym = chuni_dll_syms;
const struct dll_bind_sym *init_sym = &sym[0];
hr = dll_bind(&chuni_dll, src, &sym, _countof(chuni_dll_syms));
if (FAILED(hr)) {
if (src != self) {
dprintf("Chunithm IO: Custom IO DLL does not provide function "
"\"%s\". Please contact your IO DLL's developer for "
"further assistance.\n",
sym->sym);
// Might still be ok depending on external dll API version
int bind_count = sym - init_sym;
if ( has_enough_symbols(chuni_dll.api_version, bind_count) == S_OK )
{
hr = S_OK;
} else {
dprintf("Chunithm IO: Custom IO DLL does not provide function "
"\"%s\". Please contact your IO DLL's developer for "
"further assistance.\n",
sym->sym);
goto end;
goto end;
}
} else {
dprintf("Internal error: could not reflect \"%s\"\n", sym->sym);
}